Reaction of N‐Nonaflyl and N‐Cyano‐Benzotriazoles with Enamines
摘要:
N-Nonaflyl-benzotriazole 1a reacts with enamines 2 in tetrahydrofurane (THF) at room temperature to afford o-nonafluorobutansulfonamido-phenylazo-enamines 3 in 74-81% yield. Compound 1a reacts with 1-diethylaminobutadien 2f twice, affording pyridazine derivative 3f in 20% yield. Ringopening of N-cyano-benzotriazole 1b with pyrrolidinocyclohexene 2a affords, under cleavage of pyrrolidine 1,2,3,4-tetrahydro-dibenzo[4,5:e]imidazo[1,2-b][1,2,4]triazine 4 in 43% yield.